Pit-furnace-cover-operating mechanism.



No. 892,865. I PATENT'ED'JULY 7, 1908.

n. L. MEKEBL. PIT FURNACE COVER OPERATING MEGHANISM.

APPLICATIQH FILED JAN. 25. 1907.

wrmzssss. wg -ron. MWWW' FIG. 3-

DAVID L. MEKEEL, OF BEN AVON, PENNSYLVANIA, ASSIGNQR OF ONE-TENTH TO LUTHER K.

YODER, -OF PITTSBURG, PENNSYLVANIA.

' PIT-FURNACE-COVER-OPERATING MECHANISM.

No. 892,865. Specification 01' Letters Patent. Patented Ju 7, 1908. Application filed January 25, 1997. Serial No. 353,953.

site end is provided with a pinion 21, which is'adapted to engage with a rack 22 fitting over said pinion and held in engagement therewith by a bracket 22 extending from the 'top of the bearing frame 20, while said rack 60 is also pivoted at its front end to the forward frame 9 of thecarriage 8.

The operation of my improved mechanism is as follows :When it is desired to remove the .cover 3, from the opening 2, the 65 motor 15-is started, which causes the shaft 19 Y to be revolved through the gear-Wheels 16 and 18 on said shaft and armature shaft respectively, which will revolve; the shaft 19 and the pinion 21 thereon and draw back the 70 rack 22 engaging therewith: When the rack 22 begins to move, the cover 3 will be slightly raised by the -wheels 12 of vthe carria e 8, and the continued movement of the i will draw the cover back to the osition 75 shown by dotted lines in Fig. 2. en it is desired to replace the cover in position, the motor is reversed, which will cause the parts to bereturned to their initial position. If desired, the cover 3 can be mounted on 3 To all whom it mag concern:

'Be it known that I, DAVID L. MEKEEL, a resident of Ben Avon, in the county .of Allegheny and State of Pennsylvania, ,have invented a new and useful Improvement in Pit Furnace 'C0ver- Operatin Llechanism and I do hereby declare the following to be a full, clear, and exact description there0f.-

1 My invention relates to mechanism for opcrating the covers of pit-furnaces, and it has for its object to provide a-cheap, simple, and

1 control at all times. a

' I shall now describe -my invention so that Y companying drawing, in which Figure 1 is a plan-view showing a portion of a set of pit-furnace covers provided with my invention. Fig. 2 is a vertical section on the line 22 of Fig.- 1. Fig. 3 is a like view, showing another 'maImer of mounting the 25 cover. 4 is a detail view. I

\ Like symbols of reference indicate like parts in each of the several figures.

In the drawing, 1 represents the ordinary '22 can be connected directly with the side form of pit-furnace for heating in ots, havframe 4-of the cover and the cover can then .ing the usual opening 2, overwhic opening be moved or slid laterally along a platform or 5 is the ordinary cover 3. This cover 3 is frame 25' on top of the furnace in its forward mounted in suitable frame-,work (and rests and backward movement. upon the walls 5. I Various other modificat'ons' and changes v Mounted upon the top of the furnace and in the design, construction and operation of traveling upon the rails 6 by the wheels 7, is my improved pitfurnace cover operating a carr age 8- for moving the cover 3, which is device may be resorted to without departing what is known as the gun carriage, said from the spirit of the invention or sacrificing carriage bem provided with the forwardly any of its advantages. It will thusbe seen and rearward y extending frames 9 and 10. that the operating parts for moving the m The forward-frame 9 is loosely connected to cover Wlll be away from the heat around the the cover 3 at its center and side, as at 11 and opening to the furnace, which will insure a 1 1 1n the usual manner, and the rear frame positive and direct movement of the cover 10 has wheels 12 at itsend for en aging with at all, times, while any jerky movement or and traveling in a track 13, wiei'eby the strain on the cover or arts is reduced to a 5 cover 3 is raised and lowered through said minimum, lessening 1; us the liabilit to Wheels engaging and disengaging suitable breakage and getting out of order 0 the devices (not shown) in the usua manner. parts. ounted on a stand or platform 14, is an I claim electric motor 15, which is of any ordinary 1. In combination,.apit -furnace cover, 2 approved ty e having a gear-wheel 16 mechanism directly connected thereto for 105.

scribed.

moving the same, an electric motor; and I rack directly connected thereto fonmoving mechanism operated by said electric motor the same, an electric motor, and mechanism for actuating said cover-moving mechanism, directly connected to said rack and to the substantially as described. 2c armature shaft of said motor, s bstantially 5. In combination, a pit-furnace cover, a as described. 1 rack connected thereto for movinrithe same, 3. In combination, a pit-furnace cover; a a inion for moving the rack, mec anism for rack connected thereto for moving the same, ho ding said rack in engagement with said a shaft, a gear-wheel on said shaft meshing pinion, and an electric motor ioropening said 25 10 with said rack, an electric motor, and a gearpinion, substantially as described. f wheel mounted on the armature shaft of said In testimony whereof, I the said DAVID L. motor and engaging a secondgear-wheel on MEKEEL-have hereunto set my hand.

' I DAVID L. MEKEEL.

2. In combination, a pit-furnace cover, a

said first-named shaft; substantially as described. Witnesses: 15 4. In combinatio n,fa pit -furnace cover, J. N. CDQKE,

mechanism directly connected thereto for JAMES L. .WEHN;

It is'hereby certifiedthat in Letters PfatenirNo. 892,865, granted July 7, 1908, upon the application of David L. Mekeel, of Ben Avon, Pennsylvania, for an improvement i Pit-Furnace Oov er-Operating Mechanism, an error appears in the printed s eci- Iication requiring correction, as follows: In line 2 5, page 2, the word opening should read operating and that the said Letters ratent should beiread withthis correctiontherein that'the same may conform to'the' rewrd o f the case in the Patent Oflice. I

Si'gned and sealed this 28th d y of Jul A. 1).,1908. '7

- s w Y B., ooBE,-'

' 0.5mm of PM;

. 'Cdrrection in Letters Patent No. 892,865.

moving the same, an electric motor; and I rack directly connected thereto fonmoving mechanism operated by said electric motor the same, an electric motor, and mechanism for actuating said cover-moving mechanism, directly connected to said rack and to the substantially as described. 2c armature shaft of said motor, s bstantially 5. In combination, a pit-furnace cover, a as described. 1 rack connected thereto for movinrithe same, 3. In combination, a pit-furnace cover; a a inion for moving the rack, mec anism for rack connected thereto for moving the same, ho ding said rack in engagement with said a shaft, a gear-wheel on said shaft meshing pinion, and an electric motor ioropening said 25 10 with said rack, an electric motor, and a gearpinion, substantially as described. f wheel mounted on the armature shaft of said In testimony whereof, I the said DAVID L. motor and engaging a secondgear-wheel on MEKEEL-have hereunto set my hand.

' I DAVID L. MEKEEL.

2. In combination, a pit-furnace cover, a

said first-named shaft; substantially as described. Witnesses: 15 4. In combinatio n,fa pit -furnace cover, J. N. CDQKE,

mechanism directly connected thereto for JAMES L. .WEHN;

It is'hereby certifiedthat in Letters PfatenirNo. 892,865, granted July 7, 1908, upon the application of David L. Mekeel, of Ben Avon, Pennsylvania, for an improvement i Pit-Furnace Oov er-Operating Mechanism, an error appears in the printed s eci- Iication requiring correction, as follows: In line 2 5, page 2, the word opening should read operating and that the said Letters ratent should beiread withthis correctiontherein that'the same may conform to'the' rewrd o f the case in the Patent Oflice. I

Si'gned and sealed this 28th d y of Jul A. 1).,1908. '7

- s w Y B., ooBE,-'

' 0.5mm of PM;

. 'Cdrrection in Letters Patent No. 892,865.

Correction in Letters Patent No. 892,865.

It is hereby certified that in Letters Phtent'No. 892,865, granted July 7, 1908, upon the application of David L. Mekeel, of Ben Avon, Pennsylvania, for an improvement in Pit-Furnace-Oover-Operating Mechanism, an error appears in the printed specification requiring correction, as follows: In line 25, page 2, the word opening should read operating and that the said Letters Patent should beiread with this correction therein that the same may conform to the record oi the case in the Patent Office. 1

Signed and sealed this 28th day of July, A. D., 1908.

[sun] E. B. MOORE,

Commissioner of Patenta. 

